mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-24 20:54:10 +08:00
NFS: Initialize the NFS v4 client from init_nfs_v4()
And split these functions out of the generic client into a v4 specific file. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Bryan Schumaker
Trond Myklebust
parent
a38a9eac75
commit
428360d77c
@ -15,7 +15,7 @@ nfs-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
|
||||
nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
|
||||
nfs4super.o nfs4file.o delegation.o idmap.o \
|
||||
callback.o callback_xdr.o callback_proc.o \
|
||||
nfs4namespace.o nfs4getroot.o
|
||||
nfs4namespace.o nfs4getroot.o nfs4client.o
|
||||
nfs-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o
|
||||
|
||||
ifeq ($(CONFIG_SYSCTL), y)
|
||||
|
||||
137
fs/nfs/client.c
137
fs/nfs/client.c
@ -662,9 +662,9 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
|
||||
/*
|
||||
* Create an RPC client handle
|
||||
*/
|
||||
static int nfs_create_rpc_client(struct nfs_client *clp,
|
||||
const struct rpc_timeout *timeparms,
|
||||
rpc_authflavor_t flavor)
|
||||
int nfs_create_rpc_client(struct nfs_client *clp,
|
||||
const struct rpc_timeout *timeparms,
|
||||
rpc_authflavor_t flavor)
|
||||
{
|
||||
struct rpc_clnt *clnt = NULL;
|
||||
struct rpc_create_args args = {
|
||||
@ -1304,137 +1304,6 @@ nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr,
|
||||
}
|
||||
#endif /* CONFIG_NFS_V4_1 */
|
||||
|
||||
/*
|
||||
* Initialize the NFS4 callback service
|
||||
*/
|
||||
static int nfs4_init_callback(struct nfs_client *clp)
|
||||
{
|
||||
int error;
|
||||
|
||||
if (clp->rpc_ops->version == 4) {
|
||||
struct rpc_xprt *xprt;
|
||||
|
||||
xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt);
|
||||
|
||||
if (nfs4_has_session(clp)) {
|
||||
error = xprt_setup_backchannel(xprt,
|
||||
NFS41_BC_MIN_CALLBACKS);
|
||||
if (error < 0)
|
||||
return error;
|
||||
}
|
||||
|
||||
error = nfs_callback_up(clp->cl_mvops->minor_version, xprt);
|
||||
if (error < 0) {
|
||||
dprintk("%s: failed to start callback. Error = %d\n",
|
||||
__func__, error);
|
||||
return error;
|
||||
}
|
||||
__set_bit(NFS_CS_CALLBACK, &clp->cl_res_state);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the minor version specific parts of an NFS4 client record
|
||||
*/
|
||||
static int nfs4_init_client_minor_version(struct nfs_client *clp)
|
||||
{
|
||||
#if defined(CONFIG_NFS_V4_1)
|
||||
if (clp->cl_mvops->minor_version) {
|
||||
struct nfs4_session *session = NULL;
|
||||
/*
|
||||
* Create the session and mark it expired.
|
||||
* When a SEQUENCE operation encounters the expired session
|
||||
* it will do session recovery to initialize it.
|
||||
*/
|
||||
session = nfs4_alloc_session(clp);
|
||||
if (!session)
|
||||
return -ENOMEM;
|
||||
|
||||
clp->cl_session = session;
|
||||
/*
|
||||
* The create session reply races with the server back
|
||||
* channel probe. Mark the client NFS_CS_SESSION_INITING
|
||||
* so that the client back channel can find the
|
||||
* nfs_client struct
|
||||
*/
|
||||
nfs_mark_client_ready(clp, NFS_CS_SESSION_INITING);
|
||||
}
|
||||
#endif /* CONFIG_NFS_V4_1 */
|
||||
|
||||
return nfs4_init_callback(clp);
|
||||
}
|
||||
|
||||
/**
|
||||
* nfs4_init_client - Initialise an NFS4 client record
|
||||
*
|
||||
* @clp: nfs_client to initialise
|
||||
* @timeparms: timeout parameters for underlying RPC transport
|
||||
* @ip_addr: callback IP address in presentation format
|
||||
* @authflavor: authentication flavor for underlying RPC transport
|
||||
*
|
||||
* Returns pointer to an NFS client, or an ERR_PTR value.
|
||||
*/
|
||||
struct nfs_client *nfs4_init_client(struct nfs_client *clp,
|
||||
const struct rpc_timeout *timeparms,
|
||||
const char *ip_addr,
|
||||
rpc_authflavor_t authflavour)
|
||||
{
|
||||
char buf[INET6_ADDRSTRLEN + 1];
|
||||
int error;
|
||||
|
||||
if (clp->cl_cons_state == NFS_CS_READY) {
|
||||
/* the client is initialised already */
|
||||
dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp);
|
||||
return clp;
|
||||
}
|
||||
|
||||
/* Check NFS protocol revision and initialize RPC op vector */
|
||||
clp->rpc_ops = &nfs_v4_clientops;
|
||||
|
||||
__set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
|
||||
error = nfs_create_rpc_client(clp, timeparms, authflavour);
|
||||
if (error < 0)
|
||||
goto error;
|
||||
|
||||
/* If no clientaddr= option was specified, find a usable cb address */
|
||||
if (ip_addr == NULL) {
|
||||
struct sockaddr_storage cb_addr;
|
||||
struct sockaddr *sap = (struct sockaddr *)&cb_addr;
|
||||
|
||||
error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr));
|
||||
if (error < 0)
|
||||
goto error;
|
||||
error = rpc_ntop(sap, buf, sizeof(buf));
|
||||
if (error < 0)
|
||||
goto error;
|
||||
ip_addr = (const char *)buf;
|
||||
}
|
||||
strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr));
|
||||
|
||||
error = nfs_idmap_new(clp);
|
||||
if (error < 0) {
|
||||
dprintk("%s: failed to create idmapper. Error = %d\n",
|
||||
__func__, error);
|
||||
goto error;
|
||||
}
|
||||
__set_bit(NFS_CS_IDMAP, &clp->cl_res_state);
|
||||
|
||||
error = nfs4_init_client_minor_version(clp);
|
||||
if (error < 0)
|
||||
goto error;
|
||||
|
||||
if (!nfs4_has_session(clp))
|
||||
nfs_mark_client_ready(clp, NFS_CS_READY);
|
||||
return clp;
|
||||
|
||||
error:
|
||||
nfs_mark_client_ready(clp, error);
|
||||
nfs_put_client(clp);
|
||||
dprintk("<-- nfs4_init_client() = xerror %d\n", error);
|
||||
return ERR_PTR(error);
|
||||
}
|
||||
|
||||
/*
|
||||
* Set up an NFS4 client
|
||||
*/
|
||||
|
||||
@ -149,6 +149,7 @@ extern void nfs_umount(const struct nfs_mount_request *info);
|
||||
extern const struct rpc_program nfs_program;
|
||||
extern void nfs_clients_init(struct net *net);
|
||||
extern struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *);
|
||||
int nfs_create_rpc_client(struct nfs_client *, const struct rpc_timeout *, rpc_authflavor_t);
|
||||
|
||||
extern void nfs_cleanup_cb_ident_idr(struct net *);
|
||||
extern void nfs_put_client(struct nfs_client *);
|
||||
|
||||
144
fs/nfs/nfs4client.c
Normal file
144
fs/nfs/nfs4client.c
Normal file
@ -0,0 +1,144 @@
|
||||
/*
|
||||
* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
|
||||
* Written by David Howells (dhowells@redhat.com)
|
||||
*/
|
||||
#include <linux/nfs_fs.h>
|
||||
#include <linux/nfs_idmap.h>
|
||||
#include <linux/sunrpc/auth.h>
|
||||
#include <linux/sunrpc/xprt.h>
|
||||
#include <linux/sunrpc/bc_xprt.h>
|
||||
#include "internal.h"
|
||||
#include "callback.h"
|
||||
|
||||
#define NFSDBG_FACILITY NFSDBG_CLIENT
|
||||
|
||||
/*
|
||||
* Initialize the NFS4 callback service
|
||||
*/
|
||||
static int nfs4_init_callback(struct nfs_client *clp)
|
||||
{
|
||||
int error;
|
||||
|
||||
if (clp->rpc_ops->version == 4) {
|
||||
struct rpc_xprt *xprt;
|
||||
|
||||
xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt);
|
||||
|
||||
if (nfs4_has_session(clp)) {
|
||||
error = xprt_setup_backchannel(xprt,
|
||||
NFS41_BC_MIN_CALLBACKS);
|
||||
if (error < 0)
|
||||
return error;
|
||||
}
|
||||
|
||||
error = nfs_callback_up(clp->cl_mvops->minor_version, xprt);
|
||||
if (error < 0) {
|
||||
dprintk("%s: failed to start callback. Error = %d\n",
|
||||
__func__, error);
|
||||
return error;
|
||||
}
|
||||
__set_bit(NFS_CS_CALLBACK, &clp->cl_res_state);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the minor version specific parts of an NFS4 client record
|
||||
*/
|
||||
static int nfs4_init_client_minor_version(struct nfs_client *clp)
|
||||
{
|
||||
#if defined(CONFIG_NFS_V4_1)
|
||||
if (clp->cl_mvops->minor_version) {
|
||||
struct nfs4_session *session = NULL;
|
||||
/*
|
||||
* Create the session and mark it expired.
|
||||
* When a SEQUENCE operation encounters the expired session
|
||||
* it will do session recovery to initialize it.
|
||||
*/
|
||||
session = nfs4_alloc_session(clp);
|
||||
if (!session)
|
||||
return -ENOMEM;
|
||||
|
||||
clp->cl_session = session;
|
||||
/*
|
||||
* The create session reply races with the server back
|
||||
* channel probe. Mark the client NFS_CS_SESSION_INITING
|
||||
* so that the client back channel can find the
|
||||
* nfs_client struct
|
||||
*/
|
||||
nfs_mark_client_ready(clp, NFS_CS_SESSION_INITING);
|
||||
}
|
||||
#endif /* CONFIG_NFS_V4_1 */
|
||||
|
||||
return nfs4_init_callback(clp);
|
||||
}
|
||||
|
||||
/**
|
||||
* nfs4_init_client - Initialise an NFS4 client record
|
||||
*
|
||||
* @clp: nfs_client to initialise
|
||||
* @timeparms: timeout parameters for underlying RPC transport
|
||||
* @ip_addr: callback IP address in presentation format
|
||||
* @authflavor: authentication flavor for underlying RPC transport
|
||||
*
|
||||
* Returns pointer to an NFS client, or an ERR_PTR value.
|
||||
*/
|
||||
struct nfs_client *nfs4_init_client(struct nfs_client *clp,
|
||||
const struct rpc_timeout *timeparms,
|
||||
const char *ip_addr,
|
||||
rpc_authflavor_t authflavour)
|
||||
{
|
||||
char buf[INET6_ADDRSTRLEN + 1];
|
||||
int error;
|
||||
|
||||
if (clp->cl_cons_state == NFS_CS_READY) {
|
||||
/* the client is initialised already */
|
||||
dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp);
|
||||
return clp;
|
||||
}
|
||||
|
||||
/* Check NFS protocol revision and initialize RPC op vector */
|
||||
clp->rpc_ops = &nfs_v4_clientops;
|
||||
|
||||
__set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
|
||||
error = nfs_create_rpc_client(clp, timeparms, authflavour);
|
||||
if (error < 0)
|
||||
goto error;
|
||||
|
||||
/* If no clientaddr= option was specified, find a usable cb address */
|
||||
if (ip_addr == NULL) {
|
||||
struct sockaddr_storage cb_addr;
|
||||
struct sockaddr *sap = (struct sockaddr *)&cb_addr;
|
||||
|
||||
error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr));
|
||||
if (error < 0)
|
||||
goto error;
|
||||
error = rpc_ntop(sap, buf, sizeof(buf));
|
||||
if (error < 0)
|
||||
goto error;
|
||||
ip_addr = (const char *)buf;
|
||||
}
|
||||
strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr));
|
||||
|
||||
error = nfs_idmap_new(clp);
|
||||
if (error < 0) {
|
||||
dprintk("%s: failed to create idmapper. Error = %d\n",
|
||||
__func__, error);
|
||||
goto error;
|
||||
}
|
||||
__set_bit(NFS_CS_IDMAP, &clp->cl_res_state);
|
||||
|
||||
error = nfs4_init_client_minor_version(clp);
|
||||
if (error < 0)
|
||||
goto error;
|
||||
|
||||
if (!nfs4_has_session(clp))
|
||||
nfs_mark_client_ready(clp, NFS_CS_READY);
|
||||
return clp;
|
||||
|
||||
error:
|
||||
nfs_mark_client_ready(clp, error);
|
||||
nfs_put_client(clp);
|
||||
dprintk("<-- nfs4_init_client() = xerror %d\n", error);
|
||||
return ERR_PTR(error);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user